Transcriptional activator Cat8 is involved in regulation of xylose alcoholic fermentation in the thermotolerant yeast Ogataea (Hansenula) polymorpha

Table 1 Respiration activity of analyzed O. polymorpha strains

Strain	Respiration (nanomoles of O₂ consumed per minute per mg of cells at 30 °C)
Strain	Glucose as substrate	Xylose as substrate
WT	11.81 ± 0.52	11.35 ± 0.56
cat8Δ	8.49 ± 0.07	7.08 ± 0.14
BEP	11.87 ± 0.59	17.17 ± 0.86
BEP cat8Δ	13.98 ± 0.70	10.53 ± 0.02

Determinations were performed in distilled air-saturated water with the concentration of cells 0.5 g/L of dry weight and started by addition of 1% carbon substrate (glucose or xylose). The respiratory rate was expressed as nanomoles of O₂ consumed per minute per mg of cells (dry weight)

ISSN: 1475-2859